The fundamental features of the non-fregean logic (formulated both in structural and in invariant version) are discussed. The difference between two notions introduced by Suszko in his article Reification of Situations is analyzed : semantic homomorphism (projection of the set of sentences of a given language into the universe of situations) and of reification of situations (projection of the universe of situations into the universe of events).

We try to define the essential features of the Fregean paradigm. Then we demonstrate that Suszko's non-fregean logic, Wolniewicz's ontology of situation and Barwise-Perry's situational semantics go meaningfully beyond the fregean paradigm: what is presupposed in all of these theories is that as semantic correlates of sentences serve certain objects which are not logical values of these sentences.